Description
API Floating Ball Valves
Standards
Design and manufacture: API 6D BS ***1
Face to face dimensions: API 6D ANSI B*6.*0
End flange dimensions: ANSI B*6.5
Test: API **8
Type of connection
RF and RTJ flange ends to ANSI B*6.5 standard.
BW flange ends to ANSI B*6.*5standard.
Type of operation
Lever
Connection dimensions of Worm Gear actuator, Electric actuator,
Pneumatic actuator to ISO ***1 standard.
Anti-static constructions "AS" and Fire-resistant constructions
Features:
1. Locking device to prevent unauthorized use.
2. Stem packing are made of Teflon or Fire Safe flexible
graphite.
3. Thrust Washer is made of Teflon or Fire Safe flexible
graphite.
4. An integral stem collar makes the stem blowout-proof. The stem
is inserted from inside the body and it is back seated. The collar
will provide metal to metal contact with the valve body if the
thrust washer is decomposed during a fire.
5. Anti-static device maintains the electrical conductivity between
the stem, the ball, and the body.
6. Gasket is a Teflon or fire safe flexible graphite.
7. Ball is precision machined for exact roundness and surface
finish.
8. PTFE seats with low friction coefficient for low torque
operation.
9. Metal to metal contact between the body and the cap in case the
gasket is decomposed during a fire.
*0. Stem bearing is made of low friction coefficient PTFE for long
lasing and smooth operation.
